Chapter 149

The first chapter of Advanced Mathematics deals with the concept of functions and limits.

It includes the relationship between maps and functions, the limits of sequences and functions, the algorithm of limits, and several other small pieces.

Gu Lu has no habit of doing PPT.

In his opinion, the things displayed on the PPT are often not written on the blackboard, which makes the students remember it even more.

"The object of study in higher mathematics is the quantity of change, so the so-called functional relationship is the dependence between variables, and the limit method is the basic method of studying variables. In the first chapter, we will talk about the basic concepts of mappings, functions, limits, and the continuity of functions, as well as some of their properties. ”

"Let's talk about mapping first, about the concept of mapping and what is monographic and bijector, I won't go into too much detail, you high school teachers should have talked about it. Also, inverse mapping and compound mapping, I think your high school teachers must have taught them, so I won't repeat them, so let's look at the content of the next section......"

All students: "???"

High School Teacher...... Talked about?!

But they clearly remembered that this part of the knowledge points, the high school teacher said, the university teacher will definitely teach it after the university, so they didn't say it directly.

There is a kind of trust called college teachers and high school teachers.

High school teacher: "Your college teacher will definitely teach this!"

University teacher: "Your high school teacher must have talked about this, so I won't repeat it!"

Students: "MMP!"

…………

Giving a lecture with a group of Yan college students, compared to lecturing with a group of high school students before, Gu Lu obviously felt the difference between the two.

The most obvious point is the efficiency of the two in acquiring knowledge.

The gap is not a little bit or a half.

In Yan University, any class is full of top students.

Any one of them belongs to the top students of their respective schools in high school.

In terms of class efficiency, the overall class is much better than the uneven class in high school.

For some content, Gu Lu doesn't have to repeat it two or three times like teaching high school students.

Everything is done over and over again.

The students listened efficiently, and Gu Lu spoke efficiently.

After two classes, Gu Lu finished the first two chapters of high mathematics.

…………

There are two math classes a week and two advanced math classes, for a total of four large classes.

This is the current curriculum of Gu Lu.

Compared to high school, this is naturally a lot easier.

But for university teachers, this course schedule is quite tight.

For some associate professors, it's usually just one or two classes a week.

But Gu Lu is still a hard-pressed little lecturer now, and the professors focus on research most of the time, and the professors are too lazy to teach basic courses such as counting points and advanced mathematics, so they can only come to their group of lecturers.

However, the lecturers of Yan University are not ordinary people.

In other universities, students who have graduated with a master's degree from a prestigious university are generally qualified to become lecturers.

But in Yan Da is different.

The minimum educational qualification for a lecturer at Yan University is a doctoral degree.

Moreover, at least doctoral students from the top 10 universities in China are required to be recruited by Yenching University.

The rest, unless there are special circumstances, are generally not considered.

In fact, there are many lecturers in Yan University, and in terms of qualifications and ability, they are enough to be rated as associate professors in other universities.

However, due to the extremely difficult promotion mechanism within Yan University, he can only be willing to be a small lecturer.

However, it is rare for teachers from Yan University to jump to other schools.

The teachers of Yan University, whether in terms of resources or status and connections, seem to be comparable to Tsinghua University next door in China.

Especially the School of Mathematics of Yan University.

The Department of Mathematics of Yan University has always been firmly on the throne of the first place in China, and naturally brings together countless top bulls in the industry.

Some mathematicians who focus on scientific research are almost squeezing their heads and want to enter the Yan University School of Mathematics and get in touch with this group of top bulls.

However, the Yan University School of Mathematics will only admit students on the basis of merit.

And this group of lecturers who have been admitted to the school, after a few years, will definitely become the group of bull-level figures they once admired.

Repeatedly, if this virtuous cycle continues, the mathematics department of Yan University will only become stronger and stronger.

However, this is only for the domestic side.

Internationally, there are many universities and universities whose mathematics departments are ranked above Yenching University.

In the latest QS World University Rankings by Subject in Mathematics, the Department of Mathematics of Yan University is only ranked 20th.

If you want to enter the top 10, you need to work hard from generation to generation.

Ten years of trees, 100 years of people.

Yan University's 100-year history is no worse than any university in the world.

With the continuous rise of young talents, it is only a matter of time before Huaguo Mathematics catches up with the pace of the world.

…………

Lunch was settled by Gu Lu at the farm restaurant.

In fact, in several restaurants of Yan University, the yellow braised chicken rice in Xuewu Canteen is the most suitable for Gu Lu's appetite.

But one is too far away, and the other is that it is the peak lunch season, and it is to be expected that the window of yellow braised chicken rice will be full.

Gu Lu chose the farm restaurant, which was very close to the building of the number of courtyards.

"Auntie, here's this, braised pork and potatoes. Gu Lu pointed to a pot full of braised pork and said to the canteen aunt wearing masks and gloves.

"Okay, boy, wait a minute!"

The cafeteria aunt waved a big iron spoon and filled Gu Lu's stainless steel plate with a full spoonful of ...... Potato!

Gu Lu: "......"

Gu Lu lowered his head and took a closer look.

It was indeed a plate full of potatoes, Gu Lu flipped through it with chopsticks, and he didn't even see half a piece of braised pork.

There were only a few bits of minced meat, floating on the soup.

This......

Sure enough, after going to college, even the cafeteria aunt became lazy.

When I was in high school, the cafeteria aunt would symbolically shake the spoon and shake off the pieces of meat in the spoon.

But when they got to college, they were already too lazy to be perfunctory.

A direct "no meat spoon" stunt is used, allowing you to experience the fear of being dominated by a high school cafeteria aunt again in minutes.

Gu Lu reaffirmed his previous thoughts.

His lifelong enemy has emerged, and that is ...... Canteen Aunt!

He had a smooth journey before, but under the hands of the canteen aunt, I don't know how much he lost.

After returning from abroad, Gu Lu obviously felt that he had lost a lot of weight.

Now we have finally found the root cause.

Let you suffer from the poison of the canteen aunt for a year, it's no wonder that you can get fat.

Gu Lu felt that he needed to make up for it.

So Gu Lu went to the window next door called "Called a chicken" and called a chicken.

The chicken is very small, and it is estimated that it is still a chick.

Gu Lu first kneaded its body with his fingers and stroked every inch of the chicken's skin.

Then put on the condom and cough ...... No, put on gloves and hold the chicken and enjoy it.

"Ah, comfortable!"

........................